Armature construction



July 24, 19230 M 5ORENG ARMATURE CONSTRUCTION Filed NOV. 24 1917 W! TA/ESSES.

AT/QEQ Patented July 24, 19230 UNITED TES 1,462,585 PATENT OFFICE.

EDGAR M. SORENG, F MILWAUKEE, WISGONSIN, ASSIGNOR TO BRIGGS do STBATTON COMPANY, OF MILWAUKEE, 'WISGGNSIN, A. CORPORATION OF WISCONSIN.

MATURE CQNSTRUCTIQN.

Application filed November 2%, 1817. Serial No. 203,788..

To all whom it may concern:

Be it known that I, EDGAR M. Sonnnc, a citizen of the United States, and resident of Milwaukee, Milwaukee County, Wisconsin, have invented new and useful Improvements in Armature Constructions, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

This invention has for its object to provide an armature construction for electromagnetic devices which -will be inexpensive to manufacture and which will firmly hold the armature in place while freely permitting its required movements without appreciable wear, and which will give adjustable spring action thereto.

With the above and other objects in view, the invention consists in the armature construction, its parts and combinations of parts, as herein claimed and all equivalents.

Referring to the accompanying drawin in which like characters of reference in icate the same parts in difi'erent viewst Fig. 1 is a view of a vibrating regulator for storage battery charging systems provided with armatures constructed in accord ance with this invention; and,

Fig. 2 is a face view of one of the armatures thereof.

In these drawings indicates a pole iece which is common to the magnet windings 11 and 12 as it connects with the partition pole piece 13 mounted on the core 14: which serves for both magnets. Another pole piece 15 is common to both magnets as 1t is mounted on the other end of the partition pole piece 13. The magnet heads 16 are formed of insulating fibre or other non-magnetic material so that the armature members 17 and 18 respectively, extending from the pole piece 10 to the pole piece 15 and close to the end of the core 14, bridge the air gaps and complete the magnetic circuits of the two magnet coils 11 and 12.

The ends 19 of the pole piece 10 are bent away from the core .14 to a suitable degree, preferably so as to form acute angles with the major straight ortion thereof, and the material of which t is pole piece is made is such that the angularity of these ends may be slightlg1 varie by hand by grasping the downwar y extending portions with pliers and bending them more or less to suit the requirements.

As the construction of the armature mountings on the two bent ends 19 is essentially the same, a description of one will answer for both.

-A hearing plate 20 is secured to the angularly bent end 19 of the pole piece 10 by means of screws 21, two of which are preferably used at the ends of the bearing plate. A leaf spring 22- is also attached by means of these screws 21 and the main portion of the bearing plate 20 as well as the broader attaching part of the spring 22 take the an= gular position of the end 19 and are changed with it in its adjustments.

The upper edge of the bearingplate 20 t has a pair of vertical slots and the portions between said slots and the ends of the plate are bent reversely to extend upwardly in a difierentplane from the bearing plate roper. This forms a pair of s aced open arings, 2? within which the ower end of the armature 17 fits. A tongue 24 is cut from the armature and bent out at right, angles thereto and then down approximately parallel therewith, and is connected by rivets 25,

or in any other suitable manner with the end of the upstanding spring ton e 22. The

position of the tongue 24 is angu ar with respect to. the normal direction of the s ring 22, requirin the latter to be bent as s own in order to ie attached thereto. This bend of the spring places it under tension for drawing the armature away from the core of the magnet and against a stop 26. The spring action on the armature may be varied by bendin the tongue 24 nearer to or farther from t e armature proper and the tongue is of such material that such bending is easily accomplished by the use of ordinary pliers. a

The annature construction of the present invention has many advantages over the ordinary pivotal connections or the 8 ring hinge connections commonly used. It is less expensive to manufacture than many of the other forms and is more durable for 'the parts are not subjected to material wear. The armature is practicall supported by its retrieving spring 22 by w ich it is prevent-- ed from displacement from its engagement with the bearing plate 20 and in its movements its lower end is caused! to slide on the bearings 23, ensuring an unrestricted path for the flow of electrical current controlled by contacts 27 engaged during the movements of the armature, in addition to the path of current flow afforded by the spring 22. The bearing plate 20 is preferably of iron and because of its engagement by the end of the armature avoids the formation of an air gap in the magnetic circuit at this pointto reduce the efi'ective pull of the magnet on its armature, which air gap would naturally be formed if a spring hinge of brass or other non-magnetic material were "employed. The armature is capable of an armature may thus be obtained which is very essential in a regulator for storage battery charging systems for determining the rate of charge of the battery at which regulation takes place.

While the armature construction of this invention has special merit as applied to a vibrating regulator for storage battery charging systems, it may also be applied with more or less merit to various other electromagnetic devices.

What I claim as new and desire to secure by Letters Patent is:

1. An armature construction comprising an armature member, an angularly adjustable plate against which the armature member bears, and a spring secured to the armature member and to the plate and havin its spring action on the armature varie by the angular adjustment of the plate.

2. A11 armature construction, com rising an armature member, 'a stop there or, an armature supporting leaf spring fixed at one end and connected with the armature member at the other end], and a current-conducting flux-carrying bearing against which the end of the armature member slidably bears.

3. A magnet armature construction, comprising an armature member, an armature supporting leaf spring fixed at one end and connected to the armature'member at the other end, a stop for one end of the arm'a ture member and a current-conducting slidl able bearing for the other end of the arma ture member constituting the pole piece of the magnet.

4;. A. magnet armature construction, comprising an armature member, an armature supporting leaf spring fixed at one end and connected at the other end to the armature, a'stop for one end of the armature member, and an open current-conducting hearing against which the other end of the armature slidably bears to form a path for the magnetic flux.

5. An armature construction, comprisin an armature member, a stop for one on I thereof, 'a slidable bearing for the other end thereof, an adjustable bendable support for the bearing, and a spring secured to said support and engaging the armature member.

6. A magnet armature construction, comprising an armature member, a magnet pole piece forming a bendable support, said armature member having a bearing on the said support, and a spring with one end connected to the support and the other end con-' nected to the armature member.

7. An armature construction, comprising an armature member, a. magnet pole piece forming a bendable support, a bearing plate secured to the support, arms bent from said bearing plate to form open bearings in which the armature member is seated, and a spring secured to the bearing plate at one end and to the armature member at the other end.

8. An armature construction, comprising a pivotally mounted armature member, a bendable tongue on the armature member, and a leaf spring with one end] fixed'and the other end secured to the tongue.

9. An armature construction, comprising a pivotally mounted armature member, a bendable tongue out therefrom and extendingapproximately parallel thereto, and a leaf spring with one end fixed and the other end riveted to the tongue.

10. An armature construction, comprising an armature member, a magnet pole piece with an angularly bent end! forming a bendable support, a bearing plate secured to the support and having arms bent therefrom to form open bearings for one end of the armature member a spring secured to the support, a bendable tongue on the armature member secured to the spring, and a stop for the other end of the armature member.

In testimony whereof, I aflix my signature, in presence of two witnesses.

EDGAR M. SORENG. Witnesses MARY E. SMITH, R. S. C. CALDWELL. 

